What is the difference between the SPL RTA E9X and the SPL RTA E9M?

These are two separate products for two different rear subframe configurations on the same platform family. The RTA E9X fits non-M E9X and E8X models (128i, 135i, 328i, 335i, 335d) and replaces OEM part number 33322406290. The RTA E9M fits the M Version rear subframe used in the E9X M3 and E8X 1M; a different geometry that requires a different arm. The two parts are not interchangeable. Confirm your specific variant before ordering.

Why is the factory toe arm insufficient for lowered or track-aligned E9X and E8X non-M models?

The factory toe arm uses an eccentric bolt and stamped washer that rotate through a limited arc, designed to align the car within factory tolerance at stock ride height. Lowering the car moves the suspension geometry and the required toe target beyond what the eccentric can reach. Additionally, the rubber bushing deflects under load, allowing toe to change dynamically during cornering, braking, and acceleration. The RTA E9X provides an extended adjustment range to reach any realistic alignment target and FK spherical bearings that hold toe at its set position under all load conditions.

Should I add the optional eccentric lockout kit with these toe arms?

For track use, yes. The eccentric lockout kit eliminates the factory eccentric bolt entirely and replaces it with hardware that mechanically prevents rotation under cornering load. Even with the adjustable toe arm installed, the factory eccentric bolt in the subframe can still slip under high lateral loads without the lockout. SPL Parts offers the lockout kit separately or as a pre-bundled package with the RTA E9X; the bundle is the most complete rear toe solution for track-prepared non-M E9X and E8X builds.

What OEM part number does the SPL RTA E9X replace?

The SPL RTA E9X replaces OEM part number 33322406290, which is the factory rear toe arm used across non-M E9X and E8X BMW models.

Are replacement rod ends available for the SPL RTA E9X?

Yes. SPL Parts offers replacement rod ends for the RTA E9X in both left and right hand thread. Use the links on the SPL Parts product page to source the correct replacement, or contact SPL Parts directly.

Description

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BP PRICING DIFFERENCE

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Description

SPL Parts Adjustable Bumpsteer Rear Toe Links for E9X BMW 3 Series (Non-M)

The SPL Parts RTA E9X replaces that arm with a purpose-built unit constructed from gun-drilled 2024 aluminum main links that are black anodized for corrosion resistance. The 360-degree rotating clamp with 6061-T6 aluminum clamp body and blue anodized titanium socket head cap screws locks the toe setting precisely with a single 3/16-inch allen key; no jam nuts, no second wrench, no alignment rack fumbling. The adjustment range extends significantly beyond what the factory eccentric can reach, giving the technician the range needed to correctly align a lowered E9z or E8z and dial in the specific toe value that optimizes grip, stability, or tire wear for the car’s intended use. FK spherical rod ends manufactured in Connecticut with self-lubricating, self-cleaning Teflon liners replace the rubber bushing entirely, articulating freely through suspension travel without deflecting. Rear toe holds its set position under braking, cornering, and acceleration loads rather than shifting with the rubber’s compliance. The Teflon liner is chemically bonded to the inner race; it operates from -65°F to 325°F without maintenance and provides the high load carrying capacity and dynamic wear resistance needed for track use.

Features

Replaces OEM part number 33322406290; purpose-built replacement for the factory stamped steel non-M rear toe arm
Extended rear toe adjustment range beyond the factory eccentric bolt; necessary for lowered E9x and E8x non-M builds and performance alignment targets
Gun-drilled 2024 aluminum main links; black anodized for corrosion resistance; gun-drilling reduces unsprung weight
SPL exclusive 360-degree rotating clamp with 6061-T6 aluminum clamp body and blue anodized titanium socket head cap screws; locks toe setting precisely without jam nuts
FK spherical rod ends manufactured in Connecticut; self-lubricating, self-cleaning Teflon liner chemically bonded to inner race; zero bushing deflection under load
Teflon liner operating temperature range: -65°F to 325°F; reliable for sustained street and track use without maintenance
Eliminates dynamic toe change from rubber bushing deflection under cornering, braking, and acceleration loads
Non-M Version specific; not interchangeable with the M Version SPL RTA E9M

Specifications

Body Material: 2024-T351 aluminum (gun-drilled, black anodized)
Heim Joints: PTFE-lined FK USA spherical bearings
Toe Adjustment: Wide range, past OEM eccentric limits
Bumpsteer Adjustment: Yes — fine spacers included
Origin: Made in the USA

Applications

BMW 118d: E81, E82, E87, E88 | 2004-2013
BMW 120d: E81, E82, E87, E88 | 2004-2013
BMW 123d: E81, E82, E87, E88 | 2007-2013
BMW 116i: E81, E82, E87, E88 | 2004-2013
BMW 118i: E81, E82, E87, E88 | 2004-2013
BMW 120i: E81, E82, E87, E88 | 2004-2013
BMW 125i: E81, E82, E87, E88 | 2007-2013
BMW 128i: E81, E82, E87, E88 | 2007-2013
BMW 130i: E81, E82, E87, E88 | 2004-2013
BMW 135i: E81, E82, E87, E88 | 2007-2013
BMW 318d:E90, E91, E92, E93 | 2005-2013
BMW 320d: E90, E91, E92, E93 | 2005-2013
BMW 325d: E90, E91, E92, E93 | 2005-2013
BMW 330d: E90, E91, E92, E93 | 2005-2013
BMW 335d: E90, E91, E92, E93 | 2006-2013
BMW 316i: E90, E91, E92, E93 | 2005-2013
BMW 318i: E90, E91, E92, E93 | 2005-2013
BMW 320i: E90, E91, E92, E93 | 2005-2013
BMW 323i:E90, E91, E92, E93 | 2005-2011
BMW 325i: E90, E91, E92, E93 | 2005-2013
BMW 328i: E90, E91, E92, E93 | 2005-2013
BMW 330i: E90, E91, E92, E93 | 2005-2013
BMW 335i: E90, E91, E92, E93 | 2006-2013

Notes

Installation Instructions
Only compatible with Non-M Models
Replacement rod ends available from SPL Parts, please contact us
SPL components are made-to-order in the USA; build time will be confirmed at the time of order

Frequently Asked Questions

What is the difference between the SPL RTA E9X and the SPL RTA E9M? These are two separate products for two different rear subframe configurations on the same platform family. The RTA E9X fits non-M E9x and E8x models (128i, 135i, 328i, 335i, 335d) and replaces OEM part number 33322406290. The RTA E9M fits the M Version rear subframe used in the E9x M3 and Ex 1M; a different geometry that requires a different arm. The two parts are not interchangeable. Confirm your specific variant before ordering.
Why is the factory toe arm insufficient for lowered or track-aligned E9x and E8x non-M models? The factory toe arm uses an eccentric bolt and stamped washer that rotate through a limited arc, designed to align the car within factory tolerance at stock ride height. Lowering the car moves the suspension geometry and the required toe target beyond what the eccentric can reach. Additionally, the rubber bushing deflects under load, allowing toe to change dynamically during cornering, braking, and acceleration. The RTA E9X provides an extended adjustment range to reach any realistic alignment target and FK spherical bearings that hold toe at its set position under all load conditions.
Should I add the optional eccentric lockout kit with these toe arms? For track use, yes. The eccentric lockout kit eliminates the factory eccentric bolt entirely and replaces it with hardware that mechanically prevents rotation under cornering load. Even with the adjustable toe arm installed, the factory eccentric bolt in the subframe can still slip under high lateral loads without the lockout. SPL Parts offers the lockout kit separately or as a pre-bundled package with the RTA E9X; the bundle is the most complete rear toe solution for track-prepared non-M E9x and E8x builds.
What OEM part number does the SPL RTA E9X replace? The SPL RTA E9X replaces OEM part number 33322406290, which is the factory rear toe arm used across non-M E9x and E8x BMW models.
Are replacement rod ends available for the SPL RTA E9X? Yes. SPL Parts offers replacement rod ends for the RTA E9X in both left and right hand thread. Use the links on the SPL Parts product page to source the correct replacement, or contact SPL Parts directly.

About SPL Parts

SPL Parts is a USA-based manufacturer of high-performance suspension components engineered for both professional racing and demanding street applications. Built on the core principles of strength, lightweight construction, low friction, and precision, SPL Parts products deliver the adjustability and alignment performance required by top race teams and discerning enthusiasts alike. Every component is produced using USA-sourced, certified materials and machined by experienced local shops to exacting tolerances. Professional TIG welders ensure maximum weld integrity, while each part is hand-fitted and treated with anti-seize and 3M internal panel coating for lasting protection. SPL Parts conducts all research and development in-house, allowing the team to leverage firsthand product knowledge and deliver unmatched customer support. Their suspension components feature innovative adjuster designs for quicker, more precise alignments, and utilize spherical bearings with Teflon liners that are self-cleaning, self-lubricating, and built for long service life. From concept to assembly, SPL Parts is made with pride in the USA by skilled machinists and welders who are committed to quality, innovation, and performance.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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SPL Parts Adjustable Bumpsteer Rear Toe Links for E8x / E9x BMW 1 and 3 Series (Non-M) [SPLRTAE9X]

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SPL Parts Adjustable Bumpsteer Rear Toe Links for E9X BMW 3 Series (Non-M)

Features

Specifications

Applications

Notes

Frequently Asked Questions

About SPL Parts

Reviews